261443216

素因数分解:

$2^4\times {\mathrm{127}}^1\times {\mathrm{128663}}^1$

素因数の和:128798

約数の個数: 20

約数和(自身を含む): 510538752

約数和(自身を除く): 249095536

約数列:

[1, 2, 4, 8, 16, 127, 254, 508, 1016, 2032, 128663, 257326, 514652, 1029304, 2058608, 16340201, 32680402, 65360804, 130721608, 261443216]

約数ペア:

[(1, 261443216), (2, 130721608), (4, 65360804), (8, 32680402), (16, 16340201), (127, 2058608), (254, 1029304), (508, 514652), (1016, 257326), (2032, 128663)]